Get started!
Stage 1
Answer 4 questions correctly in a row.
Using the periodic table, find the molar mass of gold .
(
Au
)
Write your answer to the hundredths place. Round if necessary.
Chemistry resources
1
2
3
4
5
6
7
1
1H
hydrogen
1.00818
2He
helium
4.002
4Be
beryllium
9.013Li
lithium
6.9413
5B
boron
10.8114
6C
carbon
12.0115
7N
nitrogen
14.0116
8O
oxygen
16.0017
9F
fluorine
19.0010Ne
neon
20.1812Mg
magnesium
24.3011Na
sodium
22.9913Al
aluminum
26.9814Si
silicon
28.0915P
phosphorus
30.9716S
sulfur
32.0617Cl
chlorine
35.4518Ar
argon
39.953
21Sc
scandium
44.9620Ca
calcium
40.0819K
potassium
39.104
22Ti
titanium
47.875
23V
vanadium
50.946
24Cr
chromium
52.007
25Mn
manganese
54.948
26Fe
iron
55.859
27Co
cobalt
58.9310
28Ni
nickel
58.6911
29Cu
copper
63.5512
30Zn
zinc
65.3831Ga
gallium
69.7232Ge
germanium
72.6333As
arsenic
74.9234Se
selenium
78.9735Br
bromine
79.9036Kr
krypton
83.8039Y
yttrium
88.9138Sr
strontium
87.6237Rb
rubidium
85.4740Zr
zirconium
91.2241Nb
niobium
92.9142Mo
molybdenum
95.9543Tc
technetium
(98)44Ru
ruthenium
101.0745Rh
rhodium
102.9146Pd
palladium
106.4247Ag
silver
107.8748Cd
cadmium
112.4149In
indium
114.8250Sn
tin
118.7151Sb
antimony
121.7652Te
tellurium
127.6053I
iodine
126.9054Xe
xenon
131.2957-71
56Ba
barium
137.3355Cs
cesium
132.9172Hf
hafnium
178.4973Ta
tantalum
180.9574W
tungsten
183.8475Re
rhenium
186.2176Os
osmium
190.2377Ir
iridium
192.2278Pt
platinum
195.0879Au
gold
196.9780Hg
mercury
200.5981Tl
thallium
204.3882Pb
lead
207.283Bi
bismuth
208.9884Po
polonium
(209)85At
astatine
(210)86Rn
radon
(222)89-103
88Ra
radium
(226)87Fr
francium
(223)104Rf
rutherfordium
(267)105Db
dubnium
(268)106Sg
seaborgium
(269)107Bh
bohrium
(270)108Hs
hassium
(269)109Mt
meitnerium
(277)110Ds
darmstadtium
(281)111Rg
roentgenium
(282)112Cn
copernicium
(285)113Nh
nihonium
(286)114Fl
flerovium
(290)115Mc
moscovium
(290)116Lv
livermorium
(293)117Ts
tennessine
(294)118Og
oganesson
(294)57La
lanthanum
138.9158Ce
cerium
140.1259Pr
praseodymium
140.9160Nd
neodymium
144.2461Pm
promethium
(145)62Sm
samarium
150.3663Eu
europium
151.9764Gd
gadolinium
157.2565Tb
terbium
158.9366Dy
dysprosium
162.5067Ho
holmium
164.9368Er
erbium
167.2669Tm
thulium
168.9370Yb
ytterbium
173.0571Lu
lutetium
174.9789Ac
actinium
(227)90Th
thorium
232.0491Pa
protactinium
231.0492U
uranium
238.0393Np
neptunium
(237)94Pu
plutonium
(244)95Am
americium
(243)96Cm
curium
(247)97Bk
berkelium
(247)98Cf
californium
(251)99Es
einsteinium
(252)100Fm
fermium
(257)101Md
mendelevium
(258)102No
nobelium
(259)103Lr
lawrencium
(262)Jumping to stage 1 of 1
Excellent!
Now entering the Challenge Zone—are you ready?